Oil-cup



(No Model.)

J. PRICE. OIL-CUP.

No. 591,293. Patented Oct. 5,1897.

Inventor. 707m fiz'ce Witnesses. WWW

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UNITED STATES ATnNr rrrcn.

JOHN PRICE, OF TRENTON, NEW. JERSEY.

OIL-CUP.

SPECIFICATIGN forming part of Letters Patent No. 591,293, dated October 5, 1897.

Application filed June 11, 1896. SerialNo. 595,217. (No model.)

To all whom it may concern:

Be itknown that I, JOHN PRICE, a subject of the Queen of Great Britain, and a resident of Trenton, in the county of Mercer and State of New Jersey, have invented certain new and useful Improvements in Oil-Cups; and I do declare the following to be a full, clear, and exact description of the invention, such' as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawin gs, and to letters of reference marked there on, which form'a part of this specification.'

Figure 1 of the drawings is a representation of a central vertical section through cup. Fig.

2 is a section on line 00 m, Fig. 1. Fig. 3 is a plan View of inner cover-plate. Fig. 4c is a perspective View of center feed-tube. Fig. 5 is a perspective yiew of feed-plug.

This invention has relation to certain new and useful improvements in grease-cups of that class which is applied to crank-pin bearings or other rotary or moving parts of machines and wherein the feed of the lubricant to the bearing is controlled by a plug or spindle operated by the movement of the part to which it is attached. I

The object of this invention is mainly to provide a cup of this character which can be refilled without disturbing the adjustment of the devices which limit the throw of the plug or spindle and thereby control the feed, Whereby is obviated the necessity for a new adjustment each time the cup is filled.

A further object is to improve the construction of the cup as a whole.

With these objects in view the invention consists in the novel construction and combination of parts, all substantially as hereinafter described, and pointed out in the appended claims.

Referring to the accompanying drawings,

the letter A designates the cup proper, which is usually of glass, open at its upper end and having a central aperture a in its bottom This opening is surrounded on the outside by a small circular boss 01,.

B designates an inner cover-plate, which is of. spider form, consisting of an annulus with two or more arms, which support a central nut portion b.

C designates the center feed-tube, whose also threaded and extends through the aperture a in the bottom of the cup. Said tube is cut away or open from side to side within the cup, as shown. In fact this portion of the tube, which is enlarged, consists only of the two narrow opposite arms 0 which conmeet the upper and the lower tubular and threaded. portions.

D is a nut which engages the threaded portion 0. The inner face of this nut iscountersunk to seat the boss or, a washer d being placed therein. Said nut also has a threaded extension D, which screws into the bearing to which the cup is attached.

The under face of the annulus of coverplate B has a seat b formed by the flange W, for a washer B. NVhen the nut D is screwed up tight, this cover-plate with the washer is drawn down tightly upon the upper edge of the cup and forms a tight joint therewith. E designates the feed vplug orspindle,which is placed within the tube 0, its lower end portion being of reduced diameter below the shoulder e, which forms a stop therefor by its engagement with the countersunk edge of the opening through the lower portion of the said plug. The plug or spindle is otherwise of plain cylindrical form.

F designates the outer cover-plate, whose inner face is concave to fit neatly over the convex upper surface of the plate B and which has a central threaded seat F to engage the upper projecting threaded end portionc of the feed-tube C. The said coverplate F has also a central boss F formed with a threaded aperture f, which is concentric with the seat F, but is of smaller diameter.

G is the adjusting -screw which engages this aperture f and whose inner end forms a stop to limit the throw of the feed plug or spindle. G is the milled head for the screw.

II is a check or jam nut on the screw G for securing its adjustment.

The plug or spindle E is usually made hollow in order .to reduce its weight, but it may be solid.

The bottom of the cup A, on the inside around the opening a, is usually somewhat to seat the lower edge of the enlarged and slotted portion of the feed-tube C.

To refill the cup, the outer cover F is unscrewed, bringing with it the screw G and the check or jam nut, but without in any way disturbing their adjustment. The cup is then filled through the opening of the inner plate B. The outer cover is then replaced and screwed down.

The advantage of the above construction of cup over those wherein the adjustment must be made each time the cup is refilled is clear. Not only is the time and trouble of such adjustments saved, but after a proper adjustment is once made the feed is afterward uniform, whereas in the old construction there is a great difficulty in securing the same adjustment each time. At one time the adjustment may be so as to cause a faster feed than usual and the cup will become empty before the engineer or attendant is aware of it, while the next time it may be such as to give an insnfficient feed. The present invention is designed to avoid all trouble of this kind.

The cup is also especially adapted for use with grease or lubricants of heavy character, as distinguished from oils.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In alubricating-cup of the class described, the combination of the cup, the laterally-open feed-tube secured atits lower end, and having a threaded portion 0 at its upper end, an inner skeleton cover having a central nut portion which screws upon the portion 0, the outer solid cover having the boss F formed with a threaded socket which also engages the said portion a, the feed-plu g within said feed-tube, the adjusting-screw having a threaded seat in said boss, and the lock-nut on said screw, substantially as specified.

2. In a lubricating device of the character described, the combination of the cup having a skeleton top formed with a central nut portion, and a laterally-slotted feed or valve tube threaded at its upper portion upon which the said skeleton top is screwed, of the closed cover also screwed upon the upper end portion of the said valve or feed tube and formed with a central external boss, the reciprocating valve-rod or plunger which extends up through the said skeleton top into the said boss, an adjusting-screw seated in the said boss with its lower end in position to engage the upper end of the said valve-rod or plunger, and a lock-nut on said screw and adapted to seat against the upper end of the said boss, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN PRICE.

\Vitnesses:

THOMAS H. HILL, JOSEPH T. CAPPLE. 

